Abs( tangent of ( square root of (n) divide by (1 plus n squared )) divide by tangent of ( square root of (1 plus n) divide by (1 plus (1 plus n) squared )))
Abs( tangent of ( square root of (n) divide by (one plus n to the power of two)) divide by tangent of ( square root of (one plus n) divide by (one plus (one plus n) to the power of two)))